Question: How long were Jimmy Wales and Pamela Green married?
Paraphrase: How long were Jimmy Grains and Pamela Green married?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q181 p:P26 ?s . ?s ps:P26 wd:Q21476682 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }